DE102005002019A1 - Stringed/keyboard instrument e.g. grand piano, has duplex bar divided into supports that are displaceable in slots in longitudinal direction for tuning of duplex sections and are arranged in slots - Google Patents

Abstract

The instrument has strings which rest in a duplex bar of a pin block (20), at a capo bar which is connected to a frame. The duplex bar is divided into supports (23) that are aligned to the strings of the same tone. The supports are displaceable in slots for toning of the duplex sections of the respective string or the group of strings in the longitudinal direction, and the supports are arranged in the slots.

Description

The The invention relates to a stringed instrument in the preamble of claim 1. Art. It is particularly suitable for grand pianos.

The at a wing horizontally extending strings are arranged between the rotatable in the post Tuning vertebrae and the fixed in a plate attachment pins clamped, with the voice post and the plate with the frame of the instrument are firmly connected.

The Strings are over here one in one piece with the voice post Duplex bar, a resonance bridge web forming main bar and a duplex bar led the plate the capo tasto bar resting on the strings between the top of the strings and main bridge limits the main sounding string of the string.

It It is known that the string sections between the duplex bridge of the Stimmstockes and the capo bar and between the main bridge and the duplex bar of the plate also when striking the string in Be vibrated and thus to the timbre of the with the Contribute to the generated string.

For the purity Often, the length of the duplex sections is crucial between capo bar and duplex bridge of the voice stick. Because the Duplex webs, also called Silien, are part of the plate, is the exact arrangement of these bars important. A subsequent change can not, what with inaccurate tuning to the notorious "Zinseln", ie the tone of the sound deteriorating O surge, leads. It remains at the occurrence of this Zinselns the manufacturer or the Tuner no choice, as the duplex sections, the so-called duplex scale, to dampen what but disadvantageously leads to a duller sound.

With The present invention is intended to eliminate this disadvantage.

To the proposal according to claim 1, this object is achieved by that the duplex bridge of the vocal floor in single, one each String or a string group of the same tone assigned segments or bucks to subdivide which in their position relative to the string rest are changeable. For this purpose, the segments are for tuning the duplex sections displaceable in the string longitudinal direction and fixable after completion of the voting process.

Of the guide the strings serve according to claim 2 in the string direction extending grooves of the vocal cords.

to Fine tuning can the segments are superficial to be edited. They therefore consist of cutting in accordance with claim 3 machinable material, preferably according to claim 4 made of steel or according to claim 8 made of titanium.

Around to define the segments after voting are according to claim 5 inside the grooves stops provided, adjustable in the groove longitudinal direction or changeable are. It is also conceivable a more complex mechanism for displacement And definition of the segments in the string longitudinal direction, as with claim 6 proposed.

These may consist of a spindle drive according to claim 7, by means of a wrench or the like tool is adjustable.

to further improvement of the sound quality is proposed according to claim 8, those elements of the instrument which transmit the vibration serve, so not only the duplex webs but also tuning pegs, the main bridge with the bridge pins and the duplex bridge of the plate and / or make the titanium pins or pins such as this for stringed instruments is already known (cf., for this purpose instrument-construction journal 3-4 / 2004, Page 48-50).

Of the The invention is based on a preferred Embodiment, its essential elements are shown schematically in the drawings are explained in detail.

In show the drawings

1 : Supervision of the stringing of a concert grand in the upper trefoil field designed according to the invention,

2 : enlarged detail side view of the duplex-tuning stick according to the invention,

3 : Supervision of the arrangement according to 2 .

4 : enlarged view of the inventively designed duplex-Stimmstockes in the upper Diskantfeld,

5 : Section along the line VV in 1 and

6 : enlarged section along the line VI-VI in 4

In the drawings described below are only for the invention essential elements, but not the ones necessary for the string instrument Assemblies such as mechanics, keyboard, housing and the like, shown.

According to the schematic representation according to 1 are above a soundboard 5 in a frame 1 the strings 10 clamped, which is detailed only on the right side of the figure and on the left with dash-dotted lines 10 ' are indicated. 1 shows the string arrangement in the upper treble field, in each of which a side group, consisting of three identically tuned strings 10a . 10b and 10c , is assigned to a sound.

As the enlarged detail side view shows better, are the strings 10 between in the voice post 20 rotatably arranged tuning vortices 21 and in the plate 50 firmly inserted plate pins 51 , also called attachment, clamped. The strings 10 are here via the duplex bridge 23 of the vocal staff 22 , the main bridge, also called gutter bridge, 40 with his peg pins 41 and the duplex bridge 52 the plate 50 guided. In the area between the duplex bridge 22 and the main pier 40 they lie under tension on the capo bar from below 30 at. The sounding string main part 12 the string 10 is limited by the capo tasting 30 and the main pier 40 while the string areas 11 and 13 the duplex sections, also called duplex scales, form.

As explained in the introduction, the purity of the sound is the length of the duplex sections 11 and 13 important. And to avoid the so-called "zigzagging" of these duplex sections, the length of these duplex sections must be very precisely dimensioned.

According to the invention is a subsequent change in the length of the duplex sections 11 by longitudinal displacement of the string support, namely the segments 23 of the duplex bridge 22 , possible. The duplex web segments 23 are for this purpose in running in the string longitudinal grooves 24 led and in these with the in the grooves 24 inserted attacks 25 fixable.

For the purpose of tuning the duplex sections 11 can be the bearing surface of the segments 23 be changed by machining, so for example by filing or grinding.

The proposal according to the invention is particularly suitable for the stringing in the upper treble region, the staff post 20 with his in the grooves 24 sliding segments 23 in the 4 and 5 is illustrated. For clarity, in 4 only two segments each 23 a group of the vocal cords 20 shown.

1

frame

5

sounding board

10

string

11

duplex section between duplex bar and capo bar

12

sounding Strings main part

13

duplex section between main bridge and duplex bridge the

plate

20

soundpost

21

tuners

22

duplex Steg of the vocal staff

23

Duplex bridge segment (Support frame)

24

groove

25

attack

30

Kapodasterstab

40

main bridge (Soundboard bridge)

41

bridge pins

50

plate (Annex plate)

51

pin (Attachment)

52

duplex Steg

Claims (8)

String instrument, in particular concert grand, consisting essentially of in a frame ( 1 ) above a soundboard ( 5 ) clamped strings ( 10 . 10 ' ), a mechanism with the strings ( 10 . 10 ' ) associated hammers and a keyboard with buttons for confirming the mechanics, in which the strings ( 10 . 10 ' ) between in a voice post ( 20 ) rotatably arranged tuning vortices ( 21 ) and in a plate ( 50 ) anchors ( 51 ) and the voice post ( 20 ) as well as the plate ( 50 ) with the frame ( 1 ), whereby the strings ( 10 . 10 ' ) on a duplex bridge of the voice post ( 20 ), on one with the frame ( 1 ) associated capo tasto bar ( 30 ), with the soundboard ( 5 ) main bridge ( 40 ) and on a duplex bridge ( 52 ) of the plate ( 50 ) are under tension, characterized in that the duplex bridge of the voice pole ( 20 ) in single, one string each ( 10 . 10 ' ) or a string group ( 10a . 10b . 10c ) segments assigned to the same tone ( 23 ), that these segments ( 23 ) for tuning the duplex sections ( 11 ) of the respective string ( 10 . 10 ' ) or Sai group ( 10a . 10b . 10c ) are displaceable in the string longitudinal direction and can be fixed after tuning. String instrument according to claim 1, characterized in that the segments ( 23 ) grooves running in the longitudinal direction of the string ( 24 ) of the voice pole ( 20 ) are guided. String instrument according to claim 1 or 2, characterized in that the segments ( 23 ) consist of a machinable material. String instrument according to claim 3, characterized in that the segments ( 23 ) consist of steel. String instrument according to one of claims 1 to 4, characterized in that in the grooves ( 24 ) in the longitudinal direction adjustable or variable stops ( 25 ) for the segments ( 23 ) are provided. String instrument according to one of claims 1-4, characterized characterized in that the segments by means of a mechanism in the string longitudinal direction are displaceable and fixable. String instrument according to claim 6, characterized that the mechanics of a by means of a wrench or the same tool is adjustable spindle operation. String instrument according to one of claims 1 to 7, characterized in that the tuning pegs ( 20 ) and / or the duplex bridge ( 22 ), in particular the segments ( 23 ) of the duplex web ( 22 ), and / or the main bridge ( 40 ) with the web pins ( 41 ) and / or the duplex bridge ( 52 ) of the plate ( 50 ) and / or the plate pins ( 51 ) consist of titanium.